Whassup Who,
Welcome aboard! River coho can be one frustrating drill.
To have them jumping all around you and not bite can be an exasperating experience.
I have three tips for you:
Fish
early, fish
deep and fish
small... Let's break these down a bit
EARLY With river coho, first light is the best bite. As light levels increase, the mature coho becomes dour and often will not bite. In this case, the early bird gets the big hooknose!
DEEP Don't be distracted by all that surface activity. The coho that are going to bite are the ones that are holding in the drift and become territorial. Sure, you'll snag a couple jumpers accidentally but day in and day out, keeping your gear on the bottom -in the strike zone- is the smart and productive play!
Small Big bait, big fish...uh, yeah.. when they're feeding maybe... When the urge to merge (as in reproduce or spawn) overcomes the need to feed you've got to make a stealthy, interesting presentation to be successful. In the Green River, Dick Nite spoons, small spinners, small Hot Shot plugs or little clusters of eggs are the go-to gear.
Down in the Duwamish, trolling plugs, small red-label herring or, using a Hot -n- Tot as a diver with a six-foot leader to the aforementioned Dick Nite can be very effective!